Dial Shape | |||
Round | Rectangle | ||
Display Type | |||
AMOLED | - | ||
Ideal For | |||
Unisex | Unisex |
Brand | |||
Xiaomi | Xiaomi | ||
Model | |||
Watch S4 | Mi Band 9 | ||
Release date | |||
October 29, 2024 | July 19, 2024 | ||
Dial Shape | |||
Round | Rectangle | ||
Size | |||
Regular | Regular | ||
Touchscreen | |||
1.43 | 1.62 | ||
Interchangeable Strap | |||
Yes | Yes | ||
Water Resistant | |||
5 ATM | 5ATM | ||
Usage | |||
Regular | Regular | ||
Ideal For | |||
Unisex | Unisex |
Width | |||
47.3 | 21.6 | ||
Height | |||
47.3 | 46.5 | ||
Thickness | |||
12 | 10.99 | ||
Weight (g) | |||
44.50 | 15.80 |
Sensor | |||
heart rate, SpO2, steps, sleep tracker | Optical heart rate, blood oxygen, six-axis motion | ||
Battery Type | |||
486mAh | 233 | ||
Battery Life | |||
15 | - |
Bluetooth | |||
Yes | Yes | ||
Bluetooth Version | |||
5.2 | 5.4 | ||
Wi-Fi | |||
Yes | - | ||
GPS | |||
Yes | - | ||
Other Connectivity Features | |||
NFC, Galileo, Glonass, Beidou, QZSS | - |
Operating System | |||
HyperOS 2 | HyperOS |
Display Resolution | |||
466 x 466 | 192 x 490 | ||
Display Type | |||
AMOLED | - |
Step Count | |||
Yes | Yes | ||
Heart Rate Monitor | |||
Yes | Yes | ||
Date & Time Display | |||
Yes | Yes | ||
Calendar | |||
- | Yes |